Heat Section Installation (Size 019) - McQuay Type K Incremental Packaged Terminal Air Conditioner Installation & Maintenance Data

Heat Section Installation (Size 019)

Figure 7 shows the heat section installed in a standard wall
box. Note that the heat section slides into a wall box on the
slide rails. For heat section installation, proceed as follows:
1. Remove heat section from shipping carton.
2. Visually check for shipping damage and report any
visible damage immediately to the trucker. Spin blower
wheels by hand to assure they do not rub within their
housing. Shipping may have loosened mounts. Adjust as
required.
3. Check voltage rating on data plate fastened to heat
section. This must conform to voltage supplied for the
equipment.
4. Locate slide rails on each side of wall box and insert
heater section into the wall box. Slide to the rear until it
is firmly seated.
5. Screw in the heat section lock screws as shown in Figure
7. (Screws are shipped with the heat section.)
Figure 7: Heat Section Installed in Wall Box
Steam or Hot Water Application (Size 019)
When the heat section requires steam or hot water, the
installation varies. See Figures 9 and 10 for suggested piping
arrangements.
1. Supply and return piping for steam or hot water is
supplied from right-hand side only. Hot water must be
supplied to the bottom of the coil, and steam to the top of
the coil.
2. To simplify the steam or hot water connections to the
coil, use 5/8'' O.D. copper tubing where local codes
permit. See Figure 8 for rough-in dimensions.
3. When hot water is to be used, an air vent must be put in
at the highest point in the piping connection. See Figure
9. If the air vent used is not of the automatic type, it
should be piped so that it may be easily opened.
4. A shutoff valve is recommended on the supply and return
side of the coil. A steam trap is required on the return
side when steam is used for heating. See Figure 10.
5. All steam or hot water lines which are located within the
room cabinet should be insulated.
IM 1068 / Page 8 of 32
WARNING
!
If the heat section is used for heating an area during construction,
specifically plastering, precautions must be taken to protect the
equipment by using covers of corrugated board, sheet metal or
plywood. If the installation specifies heat only, be sure to install
permanent weather panel and filter adapter (see "Installation of
Heating Only Option"). Failure to heed this warning can cause
malfunction of the equipment.
Figure 8: Rough-in Piping Connections Locations
Figure 9: Hot Water Coil
Figure 10: Steam Coil